Alert archive / Arkansas / Tornado Warnings in 2004

Tornado Warning 48, NWS Tulsa, OK

April 30, 2004Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 30, 2004, 9:32 PM CDT for Benton County, Arkansas. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 30, 2004, 9:32 PM CDT (02:32 UTC)
Expired: Apr 30, 2004, 10:15 PM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Benton County, AR

The radar

The Tulsa radar (KINX), 110 km from the middle of the area, began a volume at 02:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 30, 9:05 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.5 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 954 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KTSA 010232
TORTUL
ARC007-010315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
932 PM CDT FRI APR 30 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
  BENTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 1015 PM CDT

* AT 932 PM CDT...DOPPLER RADAR INDICATED A DEVELOPING TORNADO OVER
  SPRINGTOWN. THIS DANGEROUS STORM IS MOVING EAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...BENTONVILLE...
  ROGERS...LOWELL...GENTRY...SPRINGTOWN...HIGHFILL...CAVE SPRINGS AND
  DECATUR.

IF YOU ARE IN OR NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

NIGHTTIME TORNADOES ARE ESPECIALLY DANGEROUS - TAKE COVER NOW IF YOU
WAIT UNTIL YOU SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A
SAFE PLACE

LAT...LON 3633 9457 3616 9450 3625 9397 3645 9411

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 9:07 PM CDT	Severe Thunderstorm Warning	TSA	Benton	53 min
Apr 30, 9:50 PM CDT	Flash Flood Warning	TSA	Benton	4 hr
Apr 30, 10:11 PM CDT	Tornado Warning	TSA	Benton, Washington	64 min
Apr 30, 11:04 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	116 min
Apr 30, 11:19 PM CDT	Severe Thunderstorm Warning	TSA	Washington	56 min

Nearby

Tornado Warnings in Arkansas, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.